<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <title></title>
    <script src="../js/vue.js"></script>
</head>

<body>
  
    <div id="root" :x="n">
        <h2>当前的n值是：{{n}}</h2>
        <button @click="add">点我n+1</button>
        <button @click="bye">点我销毁vm</button>
    </div>
    <script>
        Vue.config.productionTip = false;
        const vm = new Vue({
            el: "#root",
            // template:
            // `
            // <div>
            //  <h2>当前的n值是：{{n}}</h2>
            // <button @click="add">点我n+1</button>
            // </div>
            // `,
            data: {
                n:1
            },
            methods:{
                add(){
                    this.n++;
                },
                bye(){
                    console.log("bye");
                    this.$destroy();
                }
            },
            watch:{
                n(){
                    console.log("n变了");
                }
            },
            beforeCreate() {
                console.log("beforeCreate");
            },
            created() {
                console.log("created");
            },
            beforeMount() {
                console.log("beforeMount");
            },
            mounted() {
                console.log("mounted");
            },
            beforeUpdate() {
                console.log("beforeUpdate");
                console.log(this.n);
                
            },
            updated() {
                console.log("updated");
                console.log(this.n);
                
            },
            beforeDestroy() {
                console.log("beforeDestroy");
            },
            destroyed() {
                console.log("destroyed");
            },
        })


    </script>
</body>

</html>